Marvel made some ****** decisions decades ago and built contracts with a ****** legal department on those decisions. Am I supposed to feel sorry for them that their own decisions are biting them in the ass and that mean ole Fox is using a character they have every right to use?

It is what it is.

Though FOX certainly cut a terrific deal for themselves back in the 90s, they (and every other large media company) made an enormous error in not buying Marvel outright. Though we would likely not have a connected universe, FOX could have had the X-Men, Avengers and Spidey under one roof with only Warner Brothers as competition in the superhero genre. Rather than falling behind Disney/Marvel, they would have complete control over publishing and merchandise and controlled the market. A lot of retired film executives are probably still regretting not seeing the potential in superhero films.